create a conversation fragment

In the futur, we want to integrate the current conversation in the
home page. To do this, it is necessary to create a conversation
fragment.

The conversation activity calls the conversation fragment. The
activity manages the LocalService and the fragment manages the
conversation management.

Change-Id: If37d76840b0ada744d9da811092d23a5351a3847
Tuleap: #1431
diff --git a/ring-android/app/src/main/res/layout/activity_conversation.xml b/ring-android/app/src/main/res/layout/activity_conversation.xml
index 90ed88f..a2a928a 100644
--- a/ring-android/app/src/main/res/layout/activity_conversation.xml
+++ b/ring-android/app/src/main/res/layout/activity_conversation.xml
@@ -5,7 +5,6 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="#ebeff0"
-    android:orientation="vertical"
     tools:context=".client.ConversationActivity">
 
     <android.support.v7.widget.Toolbar
@@ -25,90 +24,11 @@
         app:elevation="4dp"
         app:titleTextAppearance="@style/ToolbarTitle" />
 
-    <android.support.v7.widget.RecyclerView
-        android:id="@+id/hist_list"
+    <FrameLayout
+        android:id="@+id/main_frame"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_alignParentBottom="true"
-        android:layout_alignParentEnd="true"
+        android:layout_height="match_parent"
         android:layout_alignParentLeft="true"
-        android:layout_alignParentRight="true"
         android:layout_alignParentStart="true"
-        android:layout_below="@id/main_toolbar"
-        android:clipToPadding="false"
-        android:divider="@null"
-        android:listSelector="@android:color/transparent"
-        android:paddingBottom="60dp"
-        android:paddingTop="8dp"
-        tools:listitem="@layout/item_conv_msg_peer" />
-
-    <RelativeLayout
-        android:id="@+id/ongoingcall_pane"
-        android:layout_width="match_parent"
-        android:layout_height="48dp"
-        android:layout_below="@id/main_toolbar"
-        android:background="#e3c1c1">
-
-        <TextView
-            android:id="@+id/textView2"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_centerHorizontal="true"
-            android:layout_centerVertical="true"
-            android:layout_margin="10dp"
-            android:text="@string/ongoing_call"
-            android:textAppearance="?android:attr/textAppearanceMedium"
-            android:textColor="@color/text_color_primary" />
-    </RelativeLayout>
-
-    <android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
-        android:id="@+id/userInputMessageCardView"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_alignParentBottom="true"
-        android:layout_alignParentEnd="true"
-        android:layout_alignParentLeft="true"
-        android:layout_alignParentRight="true"
-        android:layout_alignParentStart="true"
-        android:layout_marginBottom="16dp"
-        android:layout_marginLeft="8dp"
-        android:layout_marginRight="8dp"
-        card_view:cardCornerRadius="2dp">
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:orientation="horizontal">
-
-            <Spinner
-                android:id="@+id/number_selector"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:visibility="visible"
-                tools:listitem="@layout/item_number_selected" />
-
-            <EditText
-                android:id="@+id/msg_input_txt"
-                android:layout_width="0dp"
-                android:layout_height="wrap_content"
-                android:layout_weight="1"
-                android:background="@null"
-                android:hint="@string/write_a_message"
-                android:imeOptions="actionSend|flagNoExtractUi"
-                android:inputType="textShortMessage|textImeMultiLine|text|textMultiLine|textCapSentences"
-                android:maxLines="5"
-                android:padding="8dp" />
-
-            <ImageButton
-                android:id="@+id/msg_send"
-                android:layout_width="wrap_content"
-                android:layout_height="match_parent"
-                android:background="?selectableItemBackgroundBorderless"
-                android:contentDescription="@string/send_message"
-                android:padding="8dp"
-                android:src="@drawable/ic_send_black"
-                android:tint="@android:color/darker_gray" />
-        </LinearLayout>
-    </android.support.v7.widget.CardView>
-
+        android:layout_below="@+id/main_toolbar" />
 </RelativeLayout>
\ No newline at end of file